package com.zzptc.easyshop.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(filterName = "ManagerFilter")
public class ManagerFilter implements Filter {
    public void destroy() {
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        //强转
        HttpServletRequest request= (HttpServletRequest) req;
        HttpServletResponse response= (HttpServletResponse) resp;
        //思路：确保登陆成功，登陆人为管理员角色
        HttpSession session=request.getSession();
        String username= (String) session.getAttribute("username");
        int role= (int) session.getAttribute("role");
        if (username!=null&&role==2){
            chain.doFilter(req, resp);
        }else {
            request.getRequestDispatcher("/error.jsp").forward(request,response);
        }

    }

    public void init(FilterConfig config) throws ServletException {

    }

}
